Latest News Register today for a free training! 10-5-2020 HTC Academy - Online Read more Our response to Covid-19 3-31-2020 Stay safe and take care of the people around you Read more HTC launches new tools and propane drive floor grinder 2-4-2020 HTC XX3, XX4 and DURATIQ XP6 Read more New sales office in Tilst, Denmark 1-31-2020 February 1 Read more HTC introduces HTC Grout+ 12-17-2019 Pores and cracks filling system Read more New sales office in Oslo, Norway 12-15-2019 December 16 Read more How to grind an HTC Superfloor™ 10-6-2019 Step-by-step movie Read more HTC launches a powerful planetary floor grinder 8-27-2019 HTC 510 – Simplicity in a new, larger size Read more Case story - HTC Superfloor™ 5-15-2019 Åby Exhibition hall, Gothenburg, Sweden Read more HTC launches XX2 5-7-2019 A problem solver when nothing else makes the cut Read more Thank You for visiting our world 4-17-2019 BAUMA 2019 highlights Read more Meet us at BAUMA 2019 3-25-2019 April 11-17, Munich Read more Meet HTC at the UK Concrete Show 2019 2-18-2019 Birmingham, March 21-22 Read more HTC launches START & GRIND 1-22-2019 Machines for an easy grinding experience. Read more START & GRIND 1-8-2019 January 23 Read more Case story – Linden Shopping mall 8-26-2018 Norrköping, Sweden Read more New digital tool search 7-1-2018 Find the right tool in three simple steps Read more HTC launches DURATIQ™ 5 4-10-2018 An Ultra-Compact Power Package Read more IT'S TIME AGAIN 3-28-2018 April 11 Read more Meet HTC at the UK Concrete Show 2018 2-21-2018 Birmingham, March 21-22 Read more HTC D60 wins Most Innovative Product (MIP) award 2-20-2018 World of Concrete 2018 Read more Highlights of World of Concrete 2018 2-4-2018 See the movie with highlights from the show Read more Meet HTC at World of Concrete 2018 11-5-2017 Las Vegas, January 23-26 Read more HTC DURATIQ™ Field Test 9-21-2017 The RPM Group has put DURATIQ to the test. Read more Updated product catalogue 2017-2018 9-13-2017 Updated version with newly launched products Read more Our toughest Big Wednesday yet! 9-5-2017 Product launches from HTC Read more Get ready for the Toughest Big Wednesday yet 8-20-2017 September 6 2017 Read more Tour across Latin America 6-14-2017 HTC Academies around the world Read more HTC Opens New Northeast Regional Office In Philadelphia 5-16-2017 Read more Sweden’s biggest research centre chooses HTC Superfloor™ 3-22-2017 MAX IV - Lund, Sweden Read more HTC Floor Grinding Solutions gets new owner 3-6-2017 Press release March 7, 2017 Read more DURATIQ™ wins Most Innovative Product (MIP) award 2-22-2017 at World of Concrete 2017 Read more Bye bye, HTC 800! 1-29-2017 The last HTC 800 HDX/RX has left the HTC factory Read more A pink DURATIQ for a great cause 12-8-2016 Concrete Cares Read more Meet HTC at World of Concrete 2017 12-1-2016 Explore DURATIQ live Read more DURATIQ™ article in PDi magazine 10-16-2016 Professional Demolition No.4 Read more DURATIQ™ wins the Great Innovation prize 10-3-2016 for manufacturers and suppliers Read more Meet HTC at DEMCON 2016 9-7-2016 September 29-30 Read more HTC launches DURATIQ™ 9-6-2016 a brand new generation of floor grinders Read more HTC Names Ryan McBride Sales and Marketing Manager for Superfloor™ in U.S. 7-27-2016 Press Release Read more Floor Prep Opportunities 7-17-2016 Brad Burns - HTC, Inc. Technical Director Read more HTC Welcomes Application Engineer 5-12-2016 Press Release Read more The Right Tool - Chemicals 5-10-2016 Brad Burns - HTC, Inc. Technical Director Read more $name 4-21-2016 Type in abstract here... Read more The Right Tool 4-6-2016 Brad Burns - Technical Director, HTC, Inc. Read more Bauma 2016 3-2-2016 April 11-17, Munich Read more HTC attends World of Concrete India 2-14-2016 New Delhi, May 18-20 Read more Combine business and pleasure. Register for the HTC Academy 2016. 12-29-2015 Education for professionals Read more Concrete Contractor Challenges 11-15-2015 by Brad Burns - HTC, Inc. Technical Director Read more Understanding Polished Concrete 10-14-2015 Brad Burns - HTC, Inc. Technical Director Read more Choosing the Right Tools 8-9-2015 By Brad Burns Technical Director for HTC Read more HTC Grinding guide 6-30-2015 A much appreciated tool Read more Visit HTC at World of Concrete Europe 3-30-2015 Paris April 20-25, 2015 Read more Product catalogue 2015 is here! 2-23-2015 New products added Read more Interview from World of Concrete 2015 2-5-2015 Brad Burns, Technical Director HTC Inc Read more Big Wednesday No.9 2-3-2015 Product launch from HTC - the innovators Read more Date for Big Wednesday No.9 1-19-2015 February 4. 2015 Read more HTC Ravager 12-8-2014 Create a bush hammered surface Read more Public holidays in Sweden 12-1-2014 HTC office in Sweden Read more Service Academy 11-16-2014 New course at HTC Academy 2015 in Sweden Read more New and improved shipment routines from Sweden 11-12-2014 Get shipping notifications by e-mail Read more HTC presents two new catalogues 9-25-2014 Product & Accessories Read more Make Floor Prep easy and make more money with the HTC Superprep™ method 9-8-2014 -By Brad Burns Tehcnical Director for HTC Read more Big Wednesday No 8 9-2-2014 New products from the Innovators Read more Date for the next product launch! 8-13-2014 Big Wednesday No.8 Read more Stefan Lind appointed as new CEO of HTC Group 8-3-2014 New CEO appointed Read more The Benefits of Remote Control Grinding 7-27-2014 By Brad Burns Read more HTC Names Brad Burns Technical Director for US 7-22-2014 Press Release Read more Management change at HTC Group 6-30-2014 Information about management change Read more HTC Ravager™ Series - USA Press Release 5-16-2014 Expose large aggregate and remove thick coatings in only one pass! (Available in North America only at this time) Read more HTC Names Mickey Roberson Sale Representative in Northeast US 3-30-2014 HTC is proud to welcome Mickey Roberson to the sales department covering the Northeast territory. Read more NEW! Diamond Xpress now available to HTC 420 3-18-2014 New size - 180 mm Read more New phone number to the Order department 3-14-2014 +46 (0)121-294 99 Read more Meet HTC at Nordbygg in Stockholm 2-11-2014 Meet HTC April 1-4, 2014 Read more $name 1-22-2014 Type in abstract here... Read more New President at HTC Inc 1-20-2014 HTC Names Per Ohstrom President for the North American business. Read more Inventory at HTC Sweden 1-3-2014 No shipments 9-10th of January Read more Opening hours during the holidays at HTC Sweden 12-11-2013 Opening hours in Sweden Read more UK office - Opening hours 12-3-2013 Opening hours during the Holidays Read more New topics at the HTC Academy in Sweden 11-12-2013 HTC Academy - For professionals Read more Dry grinding of natural stone and terrazzo - a success! 10-31-2013 Diamond Xpress Read more Grinding roadways using the HTC method 8-12-2013 The effect of grinding roadways using the HTC method is being studied in a unique research project in Sweden. Read more Big Wednesday no 6 – ”Aggressive!” 6-12-2013 Aggressive floor prep tools. Aggressive prices. Read more HTC in Sweden will be closed due to National day 6-5-2013 Changed opening hours in Sweden due to National day Read more Opening hours during Easter 2013 3-25-2013 During Easter HTC offices will have different opening hours than normal. Read more HTC partner with HSS 2-28-2013 With vision to do more than just “scratch the surface” Read more New grinding guide in pocket format available! 2-11-2013 The classic and popular "pocket grinding guide" is back in our tool boxes. Read more Big Wednesday no. 5 - Say goodbye to slurry! 2-6-2013 HTC launches industry's first 100% dry grinding system for natural stone floors. Read more HTC is adding to the BB Series 2-6-2013 After more than 20-years developing diamond tools for floor machining, we are proud to present Big Block Xtreme. Read more HTC at World of Concrete, Las Vegas 1-23-2013 HTC is once again exhibiting at World of Concrete 2013 in Las Vegas with two large booths. The dates are February 5-8, 2013. Read more Exhibition - Byggmaskiner 2013 1-22-2013 Byggmaskiner (Building Machinery) is a classic when it comes to machinery and equipment used in the construction industry, and HTC will of course appear at the show also this year. Read more HTC's opening hours during Christmas & the New Year 12-12-2012 Over the Christmas period the HTC offices will have different opening hours than normal. Read more Long-term flooring strategy at Fitesa 10-12-2012 Fitesa in Norrköping, Sweden, is a factory producing synthetic nonwovens. The factory has stopped repainting the floors and instead they grind and polish the floors into HTC Superfloor™. Read more PRESS RELEASE: Top class grinding equipment for everybody 10-8-2012 The prominent rental company Loxam chooses HTC, the leading floor solution supplier, for its grinding machines. Read more Väderstad – Intense expansion requires strong floors 10-5-2012 The company Väderstad-Verken AB in Sweden recently opened its latest 4500 sq.m. production facility. As always, they went for the flooring solution HTC Superfloor™. Facility manager Bo Engholm tells why. Read more Vote for Twister™ in the ISSA Innovation Award Program 10-3-2012 HTC Twister™ enters the new VCT Pad System in the ISSA Innovation Award Program. Read more Important information for HTC Sweden's customers 9-28-2012 On 1-2 of October the HTC Sweden warehouse is closed due to stock take. Read more Håkan Thysell winner of Honorary Award 2012 9-13-2012 During the Thursday evening gala dinner at Demcon 2012, HTC received the Honorary Award in the “Swedish Demolition Awards”. Read more PRESS RELEASE: The popular HTC Greyline™ series gets new additions 9-5-2012 It’s time to crank up the power of the HTC Greyline™ series. Read more Big Wednesday no 4 – Additions 7-17-2012 On September 5 it is time for the next “Big Wednesday”, which this time goes under the name BW no. 4 – Additions. Read more Popular dust extractor is now even more compact 5-16-2012 The construction on the popular dust extractor HTC 80 iD was recently updated in order to facilitate for better transportation. Read more HTC Academy Sweden – still vacant seats 4-3-2012 This seminar is for anyone who wants to learn more about floor grinding. Take the opportunity and register your participation today. Read more What Went Down at the Rodeo? 2-22-2012 HTC attended the 2nd Annual Concrete Polishing Rodeo held in fabulous Las Vegas. The show was held the weekend before the World of Concrete tradeshow offsite. Read more More machines comes with a floating cover 2-13-2012 As of 2012, HTC 800 HDX and RX are also equipped with a floating cover. The floating cover prevents the dust from spreading in the building. Read more Nordbygg fair coming up 1-19-2012 The most important construction fair with close to 60,000 visitors is fast approaching. Read more PRESS RELEASE: New remote controlled HTC grinder for maximum efficiency 1-18-2012 HTC is celebrating its 20th anniversary as a supplier of grinding machines and in connection with this, the remote controlled grinding machine HTC 800 RX is being launched. Read more Important information for HTC Sweden's customers 1-3-2012 On Friday 6th of January the HTC Sweden office is closed due to national holiday. On Tuesday 10th of January the HTC warehouse will be closed due to stock take. Read more HTC Cleaning Technology AB 1-3-2012 It was during 2011 decided that Twister™ from the 1st of January 2012 shall be operating as a separate legal entity within the HTC Group. Read more Case story: Medley Spa & Wellness center 12-14-2011 A wonderful ambience at Medley in Linköping, Sweden. Read more PRESS RELEASE: HTC introduce a new innovative dust extractor 12-7-2011 HTC are excited to introduce the new revolutionary HTC 80 iD. This new dust extractor increase the productivity with up to 15% compared to traditional dust extractors. Read more Big Wednesday no 2 - Take Control 11-11-2011 December 7, 2011. That is the date for our next Big Wednesday. Read more New product guide available 10-25-2011 HTC's old product catalog has been replaced with a new product guide in combination with a new feature on the HTC website to easily create a product sheet as a PDF. Read more Visit us at ISSA/INTERCLEAN 9-15-2011 HTC will attend the ISSA/INTERCLEAN at Las Vegas Convention Center in Las Vegas, Nevada, USA. Read more PRESS RELEASE: HTC launches new powerful dust extractors 9-7-2011 The HTC Greyline™ series is now extended with two powerful dust extractors, HTC GL 25 D and HTC GL 35 D. Read more PRESS RELEASE: Refurbish your floor instead of replacing it 5-20-2011 During the Pulire show in Italy starting 24th of May, HTC Sweden will launch a completely new version of the floor renovation system DCS Hybrid™. Read more HTC News April 2011 5-19-2011 Download the latest issue of HTC News. Read more PRESS RELEASE: New advanced edge grinder from HTC 4-15-2011 The new edge grinder HTC 270 EG, a real breakthrough in the field of edge grinding, is available from May 1, 2011. Read more PRESS RELEASE: New Twister™ patents 4-1-2011 The 24th of March 2011, it was decided that the European Patent Office (EPO) will approve two of the remaining six patent applications. Read more Europropre in Paris begins 5th of April 4-1-2011 Visit HTC at Europropre at Paris Expo, porte de Versailles in Paris, France. Read more BYGGMASKINER 2011, Gothenburg, March 8-11 1-21-2011 Byggmaskiner (Building Machinery) is a classic when it comes to machinery and equipment used in the construction industry, and HTC will of course appear at the show also this year. Read more Next trade show: World of Concrete 2011 1-4-2011 The annual international event World of Concrete begins 18 of January in Las Vegas, USA. We hope seeing you at the show. Read more Office closure dates during Christmas 12-13-2010 Find our opening hours during Christmas and New Year. Read more HTC News November 2010 12-2-2010 Download the latest issue of HTC News. Read more Twister™ revolutionizes hospital cleaning 11-23-2010 Major hospital chooses chemical free cleaning with Twister™ after striking results in new report. Read more Information regarding the Twister™ patent family 11-18-2010 The invention of the diamond impregnated floor pads was made by the founder of HTC, Håkan Thysell in 2005. Read more HTC Academy Sweden 2011 11-5-2010 The dates for HTC Academy 2011 in Sweden are now set. Take the opportunity and register now to ensure that the dates you want are still available. Read more Cramo invest in floor grinding 11-1-2010 Cramo has invested in 75 floor grinders from HTC Sweden AB. The agreement also includes training of Cramo staff in Sweden... Read more Tasteful concrete floors at Flygvapenmuseum 10-15-2010 A stylish and high gloss HTC Superfloor™ at the Air Force Museum in Linköping, Sweden. Read more Job advertisment: Resin/Plastics worker 9-17-2010 HTC is looking for a new co-worker to be stationed at the head office in Söderköping, Sweden. Read more HTC News August is now out! 9-7-2010 Download the latest issue of HTC News. Read more Clean - service & supply 8-30-2010 Visit HTC at Clean - service & supply, a new fair for the cleaning and service industry in Sweden. Read more PRESS RELEASE: Report for second quarter of 2010 8-17-2010 Positive cash flow and profitability during a substantial growth Read more HTC Greyline™ at DEMCON 6-21-2010 HTC is attending the DEMCON show at Infra City in Stockholm, Sweden between 9-10th of September 2010. Read more HTC Academy Sweden - Autumn 2010 6-21-2010 The dates for the Swedish HTC Academy of autumn 2010 has been set and it is now time to register. Read more A whole lot of fairs! 6-4-2010 For us at HTC the spring has been a busy period with participation at four major exhibitions. A slideshow with a mix of picture from these exhibitions are now available. Read more HTC at Bauma 6-2-2010 During Bauma, München TV did a story about HTC. Watch it here. Read more HTC UK gains further ISO accreditation 5-28-2010 HTC UK are very proud to announce that we have now achieved ISO 14001 accreditation as well as ISO 9001:2008 accreditation! Read more Successful launch of new Greyline series 5-15-2010 Recently the new machine series, Greyline was launched at Bauma in Munich. Read more HTC Academy Sweden - Autumn 2010 5-7-2010 It is now time to register for the Swedish HTC Academy of autumn 2010. Read more ISSA/INTERCLEAN Amsterdam 4-22-2010 Visit HTC during ISSA/ INTERCLEAN in Amsterdam, Netherlands. The dates of the show is 26-29 of April. Read more PRESS RELEASE: HTC Greyline™ takes floor grinding to new levels 4-19-2010 On 19th of April 2010 during Bauma in Munich HTC’s new floor grinding series HTC Greyline™ was launched. Read more PRESS RELEASE: New line of HTC floor equipment at Bauma 2010 4-12-2010 During Bauma 2010 in Munich, HTC introduces Greyline™, a new product range of floor grinders, diamond tools and dust extractors. Read more CX - A breakthrough in performance 3-26-2010 HTC introduce the new and unique CX tool series. Officially launched during the ongoing Nordbygg exhibition. Read more Nordbygg Exhibition coming up 3-10-2010 It’s once again time for Scandinavia’s most important trade show for the construction industry. Visit HTC in booth B13:31. Read more Anyone can grind their wooden floors! 2-25-2010 The EZwood™ concept is now updated with new tools and a new guide. The new tools are called EZ SL. Read more AAA-rating 5 years in a row 2-10-2010 HTC has once again reached the highest credit rating according to the rating standard AAA (Trippel-A) provided by Soliditet. Read more January issue of HTC News 2-2-2010 Download the latest version of HTC News. Read more Live demonstration of Twister™ 1-29-2010 During easyFairs Property Fair in Malmö, Sweden, HTC will perform live demonstrations of Twister™. Fair dates are February 10-11. Read more Third time at the Executive Hire Show 1-18-2010 HTC will yet again attend the Executive Hire Show in Coventry, UK. Visit us at stand C170. Read more World of Concrete is coming up 1-11-2010 Visit HTC at World of Concrete in Las Vegas 2-5 February. Read more Office opening hours during the holiday period 12-4-2009 Find our opening hours during Christmas and New Year. Read more November issue of HTC News 11-24-2009 A new issue of HTC News is now out and available for download on the website. Read more HTC Academy Sweden – Spring 2010 11-12-2009 It is now time to register for the Swedish HTC Academy of spring 2010. Read more Need an HTC Certified Contractor in Australia? 11-9-2009 Contact details for 17 HTC Certified Contractors has just been added our Australian contact page. Read more Popular floor grinder from HTC awarded for its design 11-4-2009 The HTC 1500 ixT awarded at BATIMAT 2009. Read more HTC at BATIMAT 2009, Paris - France 10-30-2009 Meet HTC during BATIMAT at La porte de Versailles, Paris. Read more HTC's new Educational Center a success 10-15-2009 Huge interest for HTC's new Educational Center and for the new HTC Academy. Read more CMS in Berlin 10-8-2009 Exhibition report from CMS in Berlin. Read more PRESS RELEASE: HTC appoints new President and CEO 10-1-2009 HTC Sweden AB has appointed Lars Landin as the new President and CEO of HTC Group. Read more ISSA/INTERCLEAN North America 9-29-2009 HTC will, in a joint venture with Americo, attend ISSA/INTERCLEAN in Chicago, Illinois, USA. Read more HTC attending ICPSC 9-22-2009 HTC will attend the ICPSC (International Concrete Polishing and Staining Conference) in Atlanta, Georgia, USA. Read more HTC at CMS Berlin trade show 9-16-2009 The international trade show CMS Berlin, with focus on cleaning systems and infrastructures, is held 22-25 September with HTC as a natural contributor. Read more New local websites 9-11-2009 Have you noticed that you now can select another language/country in the top menu? Read more HTC Stain Protection 9-4-2009 A new product to protect the floor from stains penetrating down into the floor. Read more HTC, a Clean Tech company 8-31-2009 HTC takes part in an exhibition at the new Sweden Green Tech Building in Stockholm. Read more HTC Grouting 8-27-2009 A new product which is used to satisfy high demands for a pore free surface. Read more Q: Is there a way to shorten the construction time with up to 35 days? 8-21-2009 A: Yes, it is called HTC Superprep™ (new brochure available). Read more The new issue of HTC News 8-18-2009 The latest issue of HTC News is sent from Söderköping this week and it is now also available for download on the website. Read more HTC 650 RX available internationally 7-13-2009 The new radio controlled HTC 650 RX is now available internationally. Read more The Twister patent still in force (updated version) 7-10-2009 HTC Sweden AB (HTC) is the proprietor of the European patent No. EP 1 702 714 (“the Twister Patent”), which was granted in May 2007. Read more Website now available in Swedish 7-8-2009 Starting today the website is available in Swedish. Read more Twister on Rubber Sports Floor 6-25-2009 HTC has together with one of the world’s largest manufacturers of rubber sports floor developed a maintenance guide with the Twister pads. Read more The new Educational Center is officially open 6-22-2009 The new Customer and Educational Center has a fantastic entrance with an HTC Superfloor™ like a mirror on the ground, a huge Academy Theater with more than 50 seats… Read more New branch office in Berlin 6-16-2009 You are very much welcome to visit our recently opened branch office in Berlin! Read more New machine available from HTC 6-3-2009 Place your orders of the new, fantastic HTC 650 RX today. Special introductory offer! Read more Stone+tec Report 6-1-2009 After Domotex in January Stone+Tec was HTC’s second exhibition for the year in Germany. Read more Invitation & Open House 5-27-2009 We welcome our customers to HTC Sweden AB in Söderköping the 16th of June, 2009. Read more HTC 1500 ixT bound for Austalia 5-22-2009 Diamond finish Concrete of Melbourne, Australia will be the first flooring contactor in Australia to get the HTC 1500 ixT. Read more HTC Superfloor™ featured in Swedish TV show 5-18-2009 At 8:00PM on Tuesday May 19 HTC Superfloor™ is featured in a big Swedish TV show. Read more HTC is a rapid growth company 5-14-2009 HTC Sweden AB is once again featured on Tillväxtlistan - the list of Sweden's rapid-growth companies... Read more HTC at Stone+tec, Germany 5-11-2009 Just like two years ago, HTC will be part of the upcoming Stone+tec exhibition from May 20 to May 23. Read more HTC Floor Solutions team becomes bigger 5-4-2009 HTC has strengthened the Floor Solutions team with two new members at HTC Sweden. Read more HTC’s new premises open soon 4-30-2009 In the beginning of June the first section of HTC Sweden’s new premises for education and development will be ready. Read more The new HTC Corporate Identity is being introduced 4-27-2009 You may have noticed some changes in the graphical materials from HTC... Read more HTC Certified Contractor Program 4-23-2009 HTC Superfloor™ Certified Contractors Program is now being built up worldwide... Read more HTC Market Support Catalogue 4-20-2009 Download our Market Support Catalogue filled with giveaways, clothes and marketing... Read more HTC 1500 ixT sold to Slovenia 4-14-2009 HTC Sweden´s distributor Arandela d.o.o has purchased a HTC 1500ixT. Read more PRESS RELEASE: HTC win the patent dispute against 3M and LFV. 4-6-2009 Verdict from the Swedish High Court of Justice. Read more HTC 1500 ixT sold to Denmark 4-6-2009 First HTC 1500 ixT sold to Denmark through HTC distributor Erenfred Pedersen. Read more The first HTC 1500 ixT sold in USA 3-26-2009 Jones Tile Inc in Missouri became the first owner of a HTC 1500 ixT in USA. Read more US starting 2009 with three successful tradeshows 3-20-2009 The beginning of 2009 has been busy in the US with three tradeshows already. Read more about them here. Read more Coming soon: New tools from HTC 3-17-2009 A huge step towards the ultimate grinding tool. Read more HTC awarded at the Cleaning Show 2009 3-12-2009 HTC has been awarded for "Best Innovation" at the Cleaning Show 2009 in Birmingham, UK. Read more New product catalog from HTC 3-10-2009 The new product catalog for 2009-2010 is now available for download. Read more HTC at the Cleaning Show 3-5-2009 Visit HTC at the cleaning show in Birmingham, UK, between the 10th and 12th of March. Read more The new website for HTC is here 2-11-2009 The official new website for HTC was launched today. Read more New wood grinding concept 11-22-2008 HTC launch a totally new tooling concept for wood grinding that makes the difficult simple! Read more New and improved tool holders 11-20-2008 HTC:s new and improved tool holder for the EZchange™ system enables use of the same tools on all HTC:s grinding machines. Read more EZgrind™ 10-28-2008 EZgrind™ is the new tool series from HTC for everything from coarse grinding to polishing of surfaces difficult to reach. Read more New HTC Superprep™ box 10-26-2008 The box includes five diamond segments perfect for floor prep. Read more MR-series extended 9-25-2008 HTC extends the MR-series with a step for more coarse grinding. Read more